Forgot to mention, I always take newspaper to cover the cart bottom. Also, many zip-lock bags and pads to note car model & year. I haul bigger tools in plastic buckets. Be assured that the tool you don't bring is the one you will need. To crawl under, throw a trunk liner on the gravel, as everyone else does. But shake the car hard first, and cuss at any gomer who gets inside the car while you are underneath. I think if you read the fine print, it says, "car falls on you, you weren't supposed to crawl under".

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1984 & 1985 CA 300D's
1964 & 65 Mopar's - Valiant, Dart, Newport
1996 & 2002 Chrysler minivans