Get this: In Extreme G or F-Zero, crashing into a wall or other racer at 1000+km/h just involves a little bit of health taken off the health meter. Where if someone crashed their cars at only 100km/h, it would be like a melting-together of metal, flesh and bone. You wouldn't be able to tell the difference
In the July 2000 issue of N64 Magazine (now called NGC Magazine) from the UK, there is a feature called 'Go Gadget Go!', in which they ask David Bachelor, a NASA Astrophysicist about the plauibility of some of the things found in Nintendo's games, like Link's Hover Boots, the Banana Ports in Donkey Kong 64, the Lightsabres in Super Smash Bros, and, amongst other similar things, the racers in F-Zero X.
5. Magnetic RacersFrom: F-Zero X
What it does: Most notabe on the theoratically shaky Big Blue track, F-Zero's futurisic magnetic cars are able to stick to the track at speeds of around 1000km/h.
ETA: 2015
David's Verdict: Magnetic levitation like this is possible, given the right materials for the track and terrifically precise sensors in the car's bottom to regulare the spacing between the track ad car. The stability is the challenge in building something like this, however. The limit on it's performace would still be the driver's bodily integrity [referring to the Arwings in Lylat Wars (Star Fox 64 in the US)]...and their ability to stay conscious while the blood rushes to their heads while upside-down on the Big Blue track!'
And here's something way cool!
7. Beam SwordsFrom: Super Smash Bros
What it does: 'Borrowed from a certain movie trilogy, the beam sword is a shimmering beam of pure energy that does a fair amount of damage to human flesh and bone.
ETA: 2030!!!!!!David's Verdict: If you could generate a torch made of ionized gas (known as plasma) using a handle-sized object, the something like the Lightsabre could be the result. Put a strong magnetic field intot he handle, and it might shape the plasma into a linear, sabre-shaped cutting weapon. Present-day power supplies aren't up to the task, but who's to say about future compact batteries? Plasma is used to cut in industry today. Just don't expect a neat cut...thats just fantasy, Mario!