How to drive a vehicle

Hi,

Sorry to bother you with a simple newbie question. I am going through
the Cesium Unreal Engine tutorial courses. I’m finding it difficult to get through to the Cesium support, but it is an Unreal Engine navigation question I have that stems from the Cesium " Using Custom Controller" tutorial.
The instructor in that tutorial switches between actors (a 3rd person character and a vehicle). He also drives the vehicle. I believe I have the blueprints correct that are needed. The instructor mentions to hit the ‘v’ key and drive the vehicle but none of the keys I try to use to move the vehicle with the v key selected move the vehicle (while in play mode - The vehicle can be heard running) . No further information is mentioned as how to drive the vehicle.
I also don’t know how he switches between the two actors. Also, when the play button is selected, and the mouse cursor is in the video playing area - the cursor disappears and there doesn’t seem to be a way to get it back to stop the playing. I have to hit the escape key to exit play mode. Is that normal?

Basic stuff but I just don’t know where to look to get these answers.

thanks a bunch,

cheers,
Roger