How to send vehicle over obstacles?
What obstacles do you mean? The rovers can usually drive around any obstacles.
There are of course craters and large ridges, which cannot be accessed normally. To get there you have to build a tunnel.
Start the tunnel on one side of the ridge and put the other end on the side accessible to you, your drones will build it, then you can send rovers to the other side.
Make sure to connect the tunnels with both power cables and pipes. This connects them to your network and you can use the power/water/oxygen on the other side.