Watch the Study 5 - Trucker Twang online guitar lesson by Jason Loughlin from Rockabilly Survival Guide: Lead
Truckerbilly is a great sub genre of rockabilly. The low twangy riff is at the core of it's sound. So as a soloist I focus on the lower strings and use the bigsby. Another thing you want to do is target the b5. This will help your solo sound more sinister.