i dont know if this has already been suggested sorry in advance if it has if for example you are going somewhere and dont have a laptop,would it be possible to stream the game display to the mobile device over something like wifi it could use the same app as the remote control app but also show the display.
That is not something that is going to happen probably. You would need a very solid & fast connection on both PC and Mobile. And then there would be all the problems related to this, like reducing latency and video lag to minimum, etc. There are services for game streaming, like Nvidia GameStream thing, but they have a much more advanced system that can handle that (Super computers, complex networking, etc) Would be cool sure, but that's not doable/feasible for a small team/gamedev (not other game I know ever did something like this).
read the main post, i said if you dont have a laptop --- Post updated --- ok thanks for the reply,now i know that, the team behind this game may be small but its the best team ever
I've done it myself - using the Gamestream driver, and the Moonlight app for android. It works great, actually. Fairly low latency, good onscreen controller, and good stream quality. All you have to do is add BeamNG to the list of streamable games, couple the Moonlight app on your phone to Gamestream, and launch BeamNG. You can also stream other applications.