Isn't the very worst aspect of that very scene, the CGI part rather than the practical effects part?

https://www.youtube.com/watch?v=Np4OojYGixI

Sure, the tank rolling at the bottom looks a bit like a model, but it isn't nearly as jarring as the part where the shot of the guy in the tank looks like it came from another world entirely and has been badly edited in on top.

The going over the cliff scene is a drop in the bucket to Raiders' melting faces or sticking with Last Crusade's fast aging scene