It's rare that you'll hear a libertarian call for a tax increase, but here it is in this article.
Very few people, libertarian or otherwise, enjoy paying taxes. But it is argued that gas taxes are a fair way to pay for road construction. It's certainly more fair than than using revenue from income tax. But the problem that I have with this is that a person driving a $90K electric car pays no gasoline tax but still uses and benefits from the same roads that I pay for when I buy gas for my 1995 Suzuki Swift. If you use public roads then you should pay for public roads, regardless of how fuel efficient your car is. The best solution that I can come up with is to have states collect a federal tax to pay for interstate highways when motorists renew their license plates.
To call a gas tax a "carbon tax" is dishonest if that same tax isn't applied to coal, natural gas, ethanol, kerosene, wood, or any other organic material burned by humans. You cannot claim that the purpose of the tax is protect the environment if the funds are used to pay for road construction and maintenance.