 The house that explodes and "kills" Harlan when he crashes into it  at the end of the main chase was actually constructed by director  H.B. Halicki (qv) and his crew on Halickis own ranch in Paso  Robles, CA. Halicki put dynamite under the floor before dressing the  house up, complete with food in the fridge, and fed the resulting  explosion with barrels of gas and rubber tires.