2010 Fleetwood RV American Heritage 45BT, A 45-foot American Heritage with the space, power and luxury to make the journey just as memorable as the destination. If you're looking for a motorhome that gives you the feel of a luxury coach without paying the price of a brand-new diesel pusher, take a serious look at this 2010 American Heritage 45BT. This isn't your average 2010 motorhome. The American Heritage was built as a premium Class A diesel pusher, riding on a Spartan chassis and powered by a Cummins diesel engine. At 45 feet long with three slide-outs, this coach gives you an incredible amount of living space once you're parked and set up.