Oh by the way, the garage situation was in fact entirely fictional, just a story to illustrate a point, an amalgamation of my experiences with ESTP's in RL channelled into a single fictional situation. And yes, three of the ESTP's I was thinking of in writing that example have indeed been tested and have self-confirmed their types. As it happens, when I became confused about why I was being so misunderstood here, I asked one of them who happened to be handy what he made of it. He does have the advantage of knowing me well enough to know that I wasn't going to be simply whipping up type hate, but all the same, he did say that he could see what I mean and, a mechanic himself, agreed that the example was quite typical... he also agreed with the idea of ESTP being more the type to engage with the customer, IF he had a strong J boss on his back and a commission-based salary to think of, but he said that if there were a bunch of guys like him in a place where pay didn't depend on number of jobs done or customer feedback (as it generally doesn't here), that's pretty much what it'd be like.
And thanks PT for talking sense as always (and you were spot on about why I wasn't here, all except you didn't account for the busy life of the ENTP ), and Anja, for the votes of confidence