No delivery
It may not be legal to deliver weed via Uber, but it sure doesn't stop their drivers trying.
Working in recreational dispensary (a fine post IT, pre-retirement profession BTW), I've already had to explain to three of their drivers, that if I give them weed to take to a customer, it is NOT called trafficking because a car is involved.
You'd think Uber would let them know this prior to sending them out into the real world.