[DennisP]

A 1GW coal plant requires a 100-car trainload of coal every three days.

A 1GW conventional nuclear plant is refueled by a single 18-wheeler truck, every year and a half.

A 1GW fast reactor or thorium reactor would require only one ton of fuel, about the size of a beachball, once a year. A lump of fuel smaller than a golfball would provide all the energy you need for your entire life, transportation included.

Fossil fuels still have the best energy density for cars and airplanes, but for large ships or anything stationary, nuclear is far superior. And not just for electricity; several GenIV designs run hot enough for process heat.