Not sure about parking lots, but with foams on carpet it is standard practice to "dope" the tires with traction compounds. Basically various petroleum compounds that actually break the rubbber down some and make it "sticky" to some degree. Things like Paragon Traction Action are used for carpet, even with rubber tires too. Again not sure about parking lots, but be aware, ask what works on that track, look for what other guys are doing, ask at the Hobby Shop. Generally applied 10 to 20 minutes ahead of time, ya don't want wet tires! On carpet generally youi don't do the entire front tire, or you can get too much steering. Always takes some experimenting.
cheers