So my brother and I were recently inspired by a Honda concept vehicle (Link: http://www.designbuzz.com/land-water...s-great-racer/). In light of that we designed a similar and much smaller version of this vehicle, of course with a few major adjustments. Here are some of the made-up rough specs:
Three propellers
Two Wheels
One Form for each terrain (Land, Water Air)
15 Minute Run-time
Five Motors
1m/s for land
2m/s for water
3m/s for air
50cm in length

Does this sound feasible? I still have to figure out proper specs, type of motors, battery type etc...
So my question is... what would the best materials to make it out of be? What's Rough cost? Is it possible? Has it been done?
Thanks in advance guys! If you want to see the rough sketch, just ask and I will post it.