Is there a way that you can make a vehicle that has one seat that once you do the enter animation fully it immediately ejects you to the out animation?

I was thinking of having something like this that could be placed over a scenery or piece of the map that would be able to be hopped over so you could have tactical blockades that you can't walk past without going out of your way, but that can be hopped over if you are willing to take the chance of taking fire.

Yeah, it's called my mancannons. It's kinda tricky, still trying it now. But it works exactly how you describe.
If you have an animation, I'll show you what I've done in full.

Well, I am no animator, but I would like to try this sometime because it could work wonders in some maps I plan to do.

IDK if I have you on xfire, but mine is the exact same as my username here if not.
I am heading out to a friends house for a bit of the night so I will have to catch you later.