You (and I suppose me) will have to be a little bit more careful on the roads as Thailand does have speed cameras. One chap I know was done for 135 kph in a 120 kph zone. Not an enormous fine at B. 500, but it does get you into a data base that perhaps you might prefer not to be in! But on the plus side, you do get a black and white photo of your car for B. 500.