What is the difference between a remote controlled and a manually controlled motorized golf trolley?

What is the difference between a remote controlled and a manually controlled motorized golf trolley?

Bat-Caddy: The remote controlled caddy can be operated via a handheld remote transmitter up to 100 yards distance. The manually controlled caddy is also power assisted but steering and speed control needs to be performed manually on the handle, so you will have to walk close to the caddy while operating it. Some of the manual carts have a semi-remote capability called "timed advanced function" whereby you can send the caddy a certain distance forward stopping automatically. The remote controlled caddy can also be manually operated via a seamless rheostat control on the handle. It especially comes in handy when walking off the fairway or after putting, because you don't have to walk back to your cart.