DETROIT, Mich. -- It was only a matter of time. First a few airlines such as Virgin Atlantic introduced on-board exercise programs for their passengers. Then hotel chains such as Weston, Hilton, Marriott and Traveller Hotel Group waded into the travel fitness trend. Now, the first rental car agency has entered the traveler fitness movement.

Allino Rent-a-Car, in conjunction with Ford Motor Company has announced the development of the "Ford Fitness Phaeton," which will be introduced into their rental fleet beginning this spring. Built of the same components as the company's popular stretch limousines, these specially equipped vehicles will include a racquetball court, a lap pool, workout benches, stair-climbing machines, a sauna and a juice bar for after-workout relaxing.

Jason Kluun, a spokesperson for the rental car company, said, "It's the perfect rental car for the corporate traveler, who with business meetings, client dinners and other responsibilities, would otherwise have little time to maintain a serious workout regimen. With the Ford Fitness Phaeton, he or she can get in a complete workout without missing a beat."

For those who are into extreme sports, a convertible model to be introduced in the next few months features removable floor panels that, according to Kluun, "will allow the driver and up to 13 passengers to lift and carry the car — saving on gasoline while giving an exhilarating workout."

To bring attention to its new vehicle rental options, Allino will roll out a magazine and television advertising campaign next week. Themed "Road to Fitness," the advertisements will feature fitness icon Kathy Smith completing her circuit training routine while driving between engagements.