I keep Ella in a travel type bag in the car, though I have recently been looking at the elevated car seats. Occasionally she does get carsick, so I keep an old small towel in there.
I have had her for two months, and she does seem much better in there - the crying has stopped! lol She also just started realizing that putting her harness and leash on equals fun, so there is hope that they will start realizing these 'torture devices' are more fun than staying home alone!