Why was my Thrust1 edit reverted? 

I removed Category:Thrust project as it didn't exist, and moved the article from Category:Jet land speed record cars to Category:Jet cars, as Thrust1 was not itself a land speed record car (despite being constructed as part of the Thrust project to break the land speed record).  Instead it was a low-speed test vehicle built to allow the team to gain experience in driving a jet-propelled vehicle.