Let me offer a comment on this .....in a backwards sort-of way....
Back in the old days, buggies were heavy (100 lbs!). I was SAE's buggy chairman in the early'70's, and SAE used (for many years) 2 wheeled vehicles - aka 'bikes' They were extremely light and we'd beat anyone up Hill 1 - but they were hard to push (unstable). And they reached terminal velocity quickly (aero problems), and the buggies had to go around them - a real pain between Hill 2 and Hill 3. So we'd play catch-up on the back hills - yet we were regularly in the Top 6. But bikes got banned (BS safety concerns).....So SAE ended up learning about 4 wheel design, and it took a long while to get in the ballpark. Tom Wood and I were undergrads at CMU during this period, and he can no doubt recall this transition period.
As for important buggies, one of my favorites (from my era) was SN's 'Hornet'. This was lightweight (for its era), and featured a well thought-out monocoque metal chassis and composite axles. Hornet rolled REALLY fast, and was very sleek.
I also think Phi Kaps 'Streak' is probably the sexiest buggy of all time. That thing was cool to look at - a sort of cross between a Corvette and a buggy. Streak won design several times.
A sort-of 'design' factor occurred when gal drivers were permitted. This allowed for much smaller frontal area and lower weight. Some of the buggies nowadays - - - you don't 'drive' them - you 'wear' them.
* "I love the smell of solvents at Free Roll. It smells like......victory".
* "I'm loosing my mind, but I don't seem to miss it much."