The verb hitchhike mean to solicit or get (a free ride) along a road, but what about the opposite, which is accepting them into a car? Is there a verb for it?
For example:
Jeremy ____ hitchhikers into his car.
I would use
TO GIVE A LIFT.
According to Merriam-Webster's Dictionary :
"Lift
Noun
: ASSISTANCE, HELP
: a ride especially along one's way"
This phrase would be a good match with an idiom HITCH A LIFT.
Definition of hitch a lift:
"chiefly British, informal
: to get a ride in a passing vehicle
// Her car broke down, so she had to hitch a lift with a passing truck."
You "pick up a hitchhiker".
I wouldn't add "into his car" since that is implicit (he isn't going to put the hitchhiker on the roof!)
Jeremy picked up some hitchhikers.
In Cuba, picking up hitchhikers is mandatory for government vehicles.
If you are worried about your carbon footprint, then pick up some hitchhikers to offset it a little.
You can also "offer a ride", which doesn't imply that the person accepts the ride.
Jeremy stopped to offer a ride to the man he saw walking towards town, but the guy wasn't interested.