Plenty of rental car companies offer unlimited mileage (especially in the US, Avis in particular). I spent nearly a decade as a consultant traveling extensivel

Plenty of rental car companies offer unlimited mileage (especially in the US, Avis in particular). I spent nearly a decade as a consultant traveling extensively throughout the US and Europe--and unlimited mileage rentals could be had for a reasonable and often surprisingly cheap price. I never understood why people opted to pay by the mile.