Yes, I have both car seats and carriers that can be belted in. I have also been guilty in the past of driving with one on my lap if I am going on a short drive, but I have made the commitment to not do this any more and always ensure they are safely in a pet car seat or in one of the carriers that double as a car carrier. It is best for all -- the pup, the driver & passengers of your car and all those others on the road. Here is an article I recently quoted, it should give some strength to your need for buying a car seat:
http://www.yorkietalk.com/forums/yor...e-driving.html