I did give them my credit card number (that part of the site is secure). However, I gave them a CC number that had maybe $20.00 worth of room....not even close to the $20,000 it would cost me for a new car. When I cancelled the "order" I was told that my credit card would not be charged for anything....no car, no "service charge," etc. But I watch my CC statements pretty carefully, and I'll dispute anything untoward that pops up.