Super relaxing video. I'd suggest retitling it 'Testing the ultimate picnic box in the real world (ASMR) because a lot of people love such calming stuff. I watch tons of restoration videos for the same reason.
For the remote control you could have the speed control on the handle, tilt the handle up and the box moves away from you, tilt it down (like when you're walking away) and it moves towards you. Kinda like the brake controls on the suitcase carts in the airport haha