I don't know how, but every so often a desync would occur and the rover would fall through the planet, and if you were traveling fast, you'd explode. This only seems to happen in multiplayer and it's really discouraged me from building rovers. This bug has been apparently been addressed by the community's members a few times in the past:
When this happens? Only when I'm playing multiplayer and using a wheeled vehicle... This seems gamebreaking. Any help on this?