Much better than the last one. (As expected; since they've been doing a car-light episode per season, like ep 2, before.)
Still pretty lazy writing; a computer could write these episodes. Hammond doing some irritating thing all the time (previously it was bumping into May). No actual point for the trip. Just driving around on the highway. Every scene basically the same. And for sure, they 'loved' their cars on the end. Even though they didn't do anything interesting with them. They'd probably fall in love with a Reliant Robin if they took it on a trip.
There's is no actual reinventing on GT; it's exactly the same as TG, except for the two things they aren't allowed to do (siarpc, stig), and both have been replaced badly.
Would be great if they added some new blood to the three. Take Bill Bailey, Jo Brand, Rob Brydon, Stephen Fry, Jimmy Car, etc on a trip. It would stir up the three brilliantly.