good start!
here's what i'd recommend:
dont have the car running when your'e shooting and dont drive the car.
turn the car off and push it on the smoothest road you can find.
shoot at the highest f-stop that you can so that everything is in focus. look into a neutral density filter to allow you to shoot at a higher stop in daylight.
invest in the magic arm - it's worth it
keep practicing your cloning in PS.
keep shooting! you'll only get better.

