I expected there to be podracing rules in Endless Vigil, but I don't see it.

I'm disappointed. Sure you can use chase rules, but how hard would it have been to make side bar with some rules, especially when you know everyone is going to look for it when you have SO much podrace stuff in that book.

I'm just sitting here scratching my head confused. Maybe I missed something.

Didn't one of the adventures have a cloud car race in it??? You could start there and modify for high speed podracing,,, Despairs should be disastrous IMHO

pages and pages of cloud car racing rules in Jewel of Yavin adventure

You might find some inspiration in the Taming the Dragon modular encounter.

Yep, Taming the Dragon and Jewel of Yavin are your friends. I think it was awesome enough of them to put pages just on the vehicles.

There are also all the tables in Stay on Target for dice results in difficult terrain, and the table on traffic in EV.

Also have a nice PDF i made converting some rules from WEG, and combining them in this topic: "Swoopchasing!"