We're a mobile culture and we like it that way. But a tax-per-mile plan being pushed by Republican Rep. Sam Graves of Missouri might have drivers re-thinking those weekend joyrides instead of feeling all the pain at the pump.

The Miami Herald reports: "While exact plans for such a tax remain vague, the fees could be calculated based on odometer checks, GPS devices, cellular technology or radio-frequency identification devices that would track how far a vehicle travels and charge drivers accordingly."

This isn't a unique idea. A pilot program in Colorado had 150 participants from 27 counties choose how they would report their mileage, and compared it to what they paid through the current 18.4-cent per gallon gas tax.