I need racing tips for television show

My name is John Moore and I am a producer for "The X Show," a nightly talk show that airs on the FX cable network. Next Monday, Dale Earnhardt Jr will be a guest on the show and I need your help. We have a segment called "One Good Tip" in which we give a tip or shortcut on how to handle a situation. I'd like to do something with racing or car maintainence. Maybe a cool way to increase gas mileage or clean your tools. Anything and everything to do with racing or cars. If you have anything, please email it jhollandmoore@aol.com. Thanks so much for your help.

This might do better in the Nascar or technical forum. I'll try and get someone to move it.

Considering curent events, proper tire pressure and selecting the proper after market tires.