How to Clean a Car's Interior. Cleaning the inside of a car is something that easily can get overlooked because people are mostly worried about how their car looks on the outside or they just want to save some money when going to their local car wash. You can save the cost of a professional detailing by getting out the vacuum cleaner and a few household products. Here are a few tips on how to detail your car's interior. Read more: www.ehow.com/video_1330_clean-...