Well, I recall an interview with a Williams engineer saying that (in the mid 2000's, I think) the state of Formula-1 technology was so advanced and geared to it

Well, I recall an interview with a Williams engineer saying that (in the mid 2000's, I think) the state of Formula-1 technology was so advanced and geared to its own brand of racing that, by the time it would eventually get to road vehicles, it would be too late, there would be other stuff outside of F-1 developed already.