i used to drive Hatyai - Penang- Hatyai once, as well as from Hatyai-KL-Hatyai. you cannot drive more than 100 or 110 km/hr, so bad. and from Hatyai to Penang is too short to enjoy driving. Anyway .... i will be there with you, mates.
sorry, don't know how to type Thai
Kyai