SUPERLATIVES do not come easily in the car world. A car that initially impresses can disappoint the second time around. Eager musings on the newest auto arrival can be tempered when you live with a vehicle for more than a week. But in the case of the Bentley Continental GTC, we suspect the more time you spend in it, the more persuasive it becomes. Sure it’s expensive sure it really only has practical room for two adults. But the GTC manages to combine the lushness of glamour with the rawness of performance. What more do you need?