Please, top gear love to shun thing they don't understand.
The electric car is at moment designed for inner city work, so taking them for a 200 mile journey is just them trying to show the floors.
then they go on about sodding hydrogen, an energy source that requires more energy to make than it gives out, so lots of power stations and nuclear plants.
Also fill up a hydrogen car up in the night go to sleep and you'll wake up with a empty tank due to the fact that no fuel cell can be developed to hold the stuff.
Battery technology like ICE will improve as the amount of money spent increases at least some companies are willing to invest in alternatives.