How can you call this realistic? It keeps launching backwards. Don't get me wrong, you did an amazing job and it's a cool truck, but I don't think the H3 can do wheelies and stopies.
I don't know, you are way better at this than me but when i think realism I think how it would actually react. In a real offroading situation the vehicle would only get some air in extreme cases and move at much slower speeds. Maybe less power?