A foam cannon is a simple tool that allows you to clean your car without breaking a bank or much of a sweat. A type of pressure washer, a gun like that is effective, practical, and doesn't require a whole lot of skill of finesse.
A waterless car wash will let you clean your car anywhere, anytime. The best waterless car washes will be able to clean your car, wax it, and protect from rust, abrasions, and corrosion.