"The best preparation for tomorrow is doing your best today"
Quad copters are moderately shoddy, accessible in assortment of sizes and their basic mech configuration implies that they can be worked by beginners.
If you want to find the secrets of the universe, think in terms of energy, frequency & vibration. Cut the wires and let the energy flow.
The technology to make bus service more frequent & buses with GPS systems that provide real-time schedule updates to bus stops exists.