There are a lot of things that I'd do differently. But I can't imagine being more fortunate than I have been.

We don't have formal training, that makes what we're experiencing a little bit more accessible to the viewers. If we actually knew what we were doing ahead of time, it would just be like talking at you, instead of experiencing the situation with you.

From our point of view, we're just curious, we're poking around and having fun. If it's science, if it's accurate, if it's not accurate, we did the best we can to keep things clean and understandable, but we're just having fun, so sue us if we got something wrong.

If it turns out that we're doing proper science from time to time, it just happens to be that that's the most efficient way of doing it. We go into each of these stories with an open mind, and one of the great things about how the show works is that we're not approaching it from a doctoral point of view, we're just trying to see what happens.

One of the things I'm likely to start building in my shop is a vehicle wherein each wheel has basically a flight-simulator base as its suspension. It's known as a hexapod; it's basically a tripod but each leg is two pistons. So you have six axes of freedom on it. This will be something that can not only do what lowriders do, but shorten or extend its wheelbase and jump forwards, backwards, or from one side to the other. In an off-road situation it could be rolling at speed toward a ravine and then leap across it.

There's no director who wants to portray cheese puffs with a certain color that's going to make or break the commercial, in his opinion. We don't have to do that, so I don't miss it at all, really.

There are a lot of things that I'd do differently. But I can't imagine being more fortunate than I have been.