The ascent took more than two hours and was notable as being the first time a car had climbed the long Mount Washington Carriage Road ; the descent was accomplished by putting the engine in low gear and braking extensively .
The ascent took more than two hours and was notable as being the first time a car had climbed the 7.6 mi long Mount Washington Carriage Road ; the descent was accomplished by putting the engine in low gear and using the car 's brakes .