For me it's the purpose built nature of the car....they weren't meant to be a luxury auto, rather the originals were unlikable in many ways, but they did what they did so well that they became legend in the racing field. Every time I fire mine up and hear those sidepipes, I can imagine what it felt like to be standing on one side of the road and hear the announcement: "Gentlemen, start your engines!".
It's like being a part of history, it's the hiccups and the belches as it gets warmed up, it's the impatient struggling of the engine against the confines of gravity and air resistance, the way I catch people staring as I drive by, the young schoolkids who ride their bikes by to see me working on the car.........it's not just one thing, it's EVERYTHING!!
Dugly