Drive-By Delivery

Guys, I tried to host a game but it just showed an empty world with a guy floating in the air. Is this a bug?

You gotta press TAB and hit start game, thats just a lobby

I was able to start a game and drive a truck; I saw that one of the people on the map was marked but couldn't figure out how to "deliver" to them (shooting them, interacting, ramming with the truck didn't seem to help).
I found the truck controls to feel very strange, maybe broken; the brakes were either very weak or didn't always register my inputs.
Hard to test multiplayer games, unfortunately. :( Building a working mutiplayer game in a jam is a big deal!

Wasn't sure what to do in the game, managed to start it but I don't know what to do to the marked NPCs apart from shooting them, which also didn't feel like it was working properly since a lot of the shots weren't hitting. I wasn't able to test multiplayer because I didn't have anyone to play it with, but usually connections using IP addresses like this would have issues with port forwarding and other things from what I know from trying to set up Minecraft multiplayer in the past.
It was only after looking at your video that I found the truck. Maybe it would be better to place the marker on the truck first rather than the NPC so the player knows where the pizzas are. I also found it really weird that brakes were a toggle rather than a hold input, so the truck would just brake to a complete stop and refuse to move until I un-toggled the brakes. Although I eventually found the controls in the settings, I think it would help a lot more if you either wrote them into the popup messages or on this game page itself.

The graphics look good!