The US federal government enacts a federal per-mile or annual registration tax on electric vehicles before 2030.
The Highway Trust Fund faces shortfalls due to vehicle electrification, prompting proposals for nationwide EV user fees. Resolves upon enactment of federal legislation.
Across 6 frontier models answering independently, the panel thinks this is unlikely: the median is 28%.
They do not agree: Gemini puts it at 42% and DeepSeek at 12%, 30 points apart. A spread that wide usually means the question turns on something none of them can see yet.
Nothing is settled until 7 Nov 2031, when the outcome is checked against sources and every number above gets a permanent score.
What each one said
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GeminiGoogle
Highway Trust Fund insolvency forces reauthorization by 2027, making an annual EV fee the path of least political resistance.
- IIJA surface transportation funding expires in late 2026, forcing Congress to patch trust fund deficits through new revenues.
- Per-mile VMT tracking faces intense privacy pushback, but a flat annual federal EV registration surcharge has bipartisan appeal.
- Over thirty states already charge EV fees, yet general fund transfers remain Congress's default bailout tool when taxes stall.
42% -
GrokxAI
Congress must attach an EV user fee to the post-IIJA highway bill.
- IIJA authority ends FY2026, making the 2027 reauthorization the only realistic legislative vehicle before 2030.
- States already levy EV registration fees, but the federal gas tax has been frozen since 1993 and new vehicle-specific taxes are rare.
- VMT privacy/rural opposition plus EV-industry lobbying keep odds below even unless a Trust Fund cash crisis forces action.
42% -
GPTOpenAI
Congress must pair a durable Highway Trust Fund fix with an administrable EV charge despite privacy and tax politics.
- Congress has repeatedly patched the Highway Trust Fund since 2008, while federal EV mileage-fee pilots have not become law.
- A bill needs House, Senate, and presidential approval; the next realistic vehicles are surface-transportation reauthorizations before 2030.
- Odds rise sharply if the 2026–30 trust-fund debate produces bipartisan backing for a flat annual EV fee rather than mileage tracking.
34% -
ClaudeAnthropic
Depends on whether Congress attaches an EV fee to a highway bill/reconciliation package before FY2031 IIJA reauthorization deadline.
- IIJA expires Sept 2026, forcing a reauthorization fight where highway funding mechanisms including EV fees are a natural rider.
- Republicans control Congress through at least 2026 and have pushed EV registration fees in prior bills (e.g. 2023 proposals, some state-level precedent like 30+ states…
- Federal action requires Senate 60-vote threshold unless reconciliation is used, and infrastructure funding fights often stall or get punted via continuing resolutions.
22% -
QwenAlibaba
Surface transportation reauthorization is the only realistic vehicle, but Congress has punted on HTF reform for 15+ years.
- IIJA expires FY2026, forcing a reauthorization debate now, but Congress has used general fund transfers rather than new user fees since 2008.
- Republicans frame EV fees as fairness but oppose new taxes broadly; Democrats resist anything slowing EV adoption—bipartisan passage requires both caucuses.
- Over 30 states have EV registration fees, showing feasibility at lower levels, but federal action requires 60 Senate votes and a president willing to sign a new tax.
19% -
DeepSeekDeepSeek
Whether Congress attaches an EV user fee to a must-pass highway funding bill before the Trust Fund crisis forces action.
- The Highway Trust Fund's highway account is projected to hit insolvency around 2033, so Congress faces real pressure but not a hard deadline before 2030.
- Multiple bills (e.g., the 2021 EV fee proposals, 2023-2025 Senate drafts) have died in committee; no floor vote has ever occurred, a base rate near zero for enactment.
- The most likely trigger would be a bipartisan infrastructure reauthorization in 2027-2029, but EV fees remain a partisan flashpoint and are more likely to be punted to…
12%
6 of 6 models answered · 30 points between the highest and lowest. None was shown the market price.
Question sourced from a news sweep on 8 Nov 2026. Forecast by google/gemini-3.8-flash, anthropic/claude-sonnet-5, openai/gpt-5.6-terra, x-ai/grok-4.6, deepseek/deepseek-v4.1-flash, qwen/qwen3.8-max-0902 via OpenRouter.