Q: I booked a prepaid, nonrefundable rental car through Hotwire. Then, a few days later I booked another car for the same dates by mistake. I tried to cancel one of the bookings and request a refund.

Expedia Inc. has acquired CarRentals.com, an online car rental marketing and retail company. Financial terms were not disclosed. Expedia said CarRentals.com will continue to operate in its current ...