Hey, i can help you with this. First of all im one of the creators for BeamNG.TV (https://www.youtube.com/channel/UChNGa_ngdX25hVU2qflpKaA) and i upload my centimatics to my CaptanW channel (https://www.youtube.com/channel/UCOQKRMGhHrl0zLYJWx826-w). So first of all you need bigger black bars. They are too small so you need to make them bigger or just delete them. Also you need to add some camera movement following the cars. Check my newest video for that example (linked below). You can see that i dont just rotate the camera, i am moving it in 90% of the shots. Your off to a great start. Good Luck!
For more complex videos Vegas For simpler videos like this I use movie maker Because the ui is simple
ok, watch this guy. He is the one who taught me sony vegas with his tutorial. Also here is his black bar tutorial.