Biden infrastructure plan wouldn’t establish a per-mile driving tax - PolitiFact

… "The claim is a ridiculous distortion," said Robert Poole, director of transportation policy at the Reason Foundation, a libertarian think tank. 

The purpose of the pilot program would be to test whether a mileage fee would be a viable way to support the Highway Trust Fund in lieu of the current gasoline tax. The fee has long been discussed as a means of replacing the gas tax as the auto industry moves toward electric cars…

https://www.politifact.com/factchecks/2021/sep/29/facebook-posts/biden-infrastructure-plan-wouldnt-establish-mile-d/