Wrap: That same system was struck down by the Missouri Supreme Court last year for being unconstitutional.

Republican Senator Mike Kehoe says the bill would help local governments get vital tax dollars from the sales of cars and trucks, so he wants to put it in the constitution.

If the measure passed by voters, a person from St. Louis who buys a car in Illinois would still be subject to the St. Louis sales tax.

The House's Small Business Committee has given its approval to the idea, but not before Republican Representative Kurt Bahr tweaked some of the bill's language that he says will help it in the judiciary process. 

Reporting from the state capitol, I'm Alex Mallin.

Wrap: The bill, sponsored by Republican Senator Mike Kehoe, would have Missouri car buyers pay their sales tax based on where they live-- not where they bought the car.

The Missouri Supreme Court struck down a similar system last year, saying it was unconstitutional. But Kehoe says he wants to voters to put it in the constitution so that can't happen again. 

The House's Small Business Committee has given its approval to the idea, with a few minor changes. But Kehoe says he's still confident the bill will pass.

Reporting from the state capitol, I'm Alex Mallin.