[doggiedad]

i would take them one at time for
a quick car ride. bring them home and teach them
to wait for a command to exit the car. at the same time
you'll teach them not to jump to the front sit.

you could start by teaching them in
your driveway. actually your 1/2 way
there in teaching them car manners because
they ride nicely. imagine if they didn't ride well.