The things to no longer subsidize would be road use (as part of a land tax) and generated externalities of pollution, including the military and political cost

The things to no longer subsidize would be road use (as part of a land tax) and generated externalities of pollution, including the military and political cost of maintaining a stable oil-producing middle east, the change to the global climate, and more local issues such as oil spills and rubber particulates. However road users like socialism when it's stuff they want to be subsidized. Taxing sales directly doesn't make sense - sure recoup the externalities of lithium mining when the manufacturers buy the lithium, but to charge a consumption tax unrelated to damage done doesn't seem much sense to me.