Highly unlikely fuel cells are the future of personal vehicles
Firstly, a fuel cell is vehicle is really nothing more than an electric with a different kind of battery. The advantage of the fuel cell 'battery' is that it can be refueled similar to current gas vehicles. But this is really a dubious advantage since I'd wager most people would rather let a car charge in their garage overnight rather than make a detour to a service station a few times a week. Even if I'm wrong, this is still about where the advantages end. The disadvantages and obstacles are numerous:
1. Fuel cells are a very young, exotic, technology, at least for consumer use. Batteries are already good enough now and getting better and cheaper rapidly
The infrastructure is not available to enable widespread adoption of fuel cells even if people wanted them. Batteries can be charged anywhere and supercharging technology is spreading rapidly cutting into the possible 'refueling time' advantage.
2. Electricity is fundamentally easy to move around. We can use wires. Hydrogen requires new pipelines or trucks to move it from point of production to point of use along with 'gas' stations to dispense.
3. Hydrogen may be better suited to large truck or buses which have space to store large tanks of hydrogen.
I'll let the more scientific minds on this forum correct me if I'm wrong...
4. ...but it seems to me that the wastage of energy from production to consumption of energy is higher through fuel cells than simple battery electric. Electric generation>convert electricity to hydrogen>hydrogen transport/storage>convert hydrogen back to electricity for use. -VS- Electric generation>transport and store directly in car battery>Discharge for use.
To sum it up: Fuel cells are starting from a long way back, on balance offer few if any advantages over current batteries. Meanwhile, battery tech is entering a period which is already giving us dramatic price drops and improvement in performance. Fuel cells are likely destined to continue on as a niche technology.