800 mile roadtrip

Update

I'm on my way home to Arizona, and I've run into an issue. The car surges on acceleration, up hills, after hitting major bumps, and sometimes completely at random. I changed the fuel filter, and I verified the fuel pump is working by watching the fuel filter fill up on running. The symptoms are very much akin to running out of fuel.

It doesn't seem to do it if I keep my speed down.

Any ideas? Maybe some gunk got past the filter and made it into the carb?