frustrated with guys who think girls can't drive!

all-right girls, here's what's going on. as some of you might know, i'm in the process of saving up for air cylinders. well this one guy that my bf knows does installation of cylinders, airbags, and all that sort of stuff. well i asked my bf to talk to the guy for me (since he knows him) and find out what kinda price he could get them done for me. well he said that he could get me a really good brand, semi-good brand, or cheapie brand. he said that SINCE GIRLS DON'T REALLY KNOW HOW TO DRIVE OR TAKE CARE OF THEIR CAR that i should go for the semi-good one so i don't go breaking something with the cheap stuff, and why bother getting the really good brand...(i'm assuming since i won't know the difference)... i dunno, this just really aggrevated me that guys say stupid things like that. it just makes me feel really dumb being out with the guys wondering what they really think of me. do u girls deal with stuff like this too?? sorry, i just had to vent, and figured in the girls forum, u girls would understand me better than the boys