PhEnoM78 wrote:wait so u got the underneath of ur car painted(coated)??????
No, the undercoat is not paint, it's some black stuff they spray on, and it goes on not smooth, it's almost like the texture of your wheel well. And it's supposed to protect the car against rust since there's a lot of bare metal exposed on your bottom. Again, I'd only bother doing this if you get the usual snow dumps in winter, otherwise don't bother.
The paint protection is just a high-grade wax that provides a clear coat for your paint. I was told that at max you'd only need to do this once a year (besides the regular wash, then wax @ home).