Even though I live here, I rent from Hertz at LAX rather frequently for a variety of reasons.

It's easy enough to fill up close to LAX, so don't buy the prepaid fuel option. If you're coming from east of the airport, there are also a ton of gas stations on Century Blvd. From the north, there are also a Chevron and Mobil at the I-10/La Cienega intersection. If you drive carefully, you can make it to the Hertz lot showing a full tank. In a Camaro, I'd make that VERY carefully.

Enjoy your trip!