There has recently been a purge on illegally imported luxury cars in Thailand. The purge involved about 380 very high-end cars of which it was found that 'luxury tax' of something like 300 per cent had been avoided on 330. The deputy prime minster's Rolls Royce Ghost was one of them. Who gets away with this depends on who he knows and who he pays off. So unless you know the right people (who might change after the next military coup) forget any idea of taking your Mustang to Thailand.