That scene was so over-the-top ridiculous.
No jet would dare hover INSIDE a multi-level freeway. At the least the plane would have trouble in control, and at worst it would crash. Going over a highway like that that low would result in unstable airflow as it passed from being 6 ft over the road to more to less and back. Also, AFAIK there is ZERO way to fire the guns in the hover. That is for take off/landing, it's not a helo gunship! Also, there's no way he would get that close. Again, it's not a helo. However, the movie makers decided once it got there they could make it into a helicopter and so they did.
In short, although it's nice to watch, it's no different from the ridiculous scene with Arnold and Eliza Dushku and that other guy in True Lies.