I don't even know if it's possible to do what Top Gear suggest. To only get 55 miles from the pack means that you have discharged at over 1000Wh/mile (it's a 53kWh pack.) If you are travelling at say, an average speed of 55mph (to make math easier), this is over 55kW continuous. I recall the early Roadster shown in the video was a prototype which is limited by its air cooled motor. 55kW continuous is very hard to achieve without the power limiter kicking in (this was improved in the later versions of the car and also in the Model S but still exists to an extent.) But without Tesla revealing the logs it's only speculation.
It's possible to only get 70 miles out of a Roadster if you drive at 120 mph continuously, or less than that with constant acceleration and braking. But that's unrealistic for real world driving, and that's what Tesla were upset over. Ultimately, Top Gear is an entertainment program, but people trust them for reviews, and I enjoy watching it myself... though personally Clarkson has always annoyed me, it's him just playing a character more than himself.
Take an ordinary petrol car to a track and drive aggressively, you'll get short range too. The difference is you can fill up the range quickly on a petrol car. Improvements in charging, and battery swap (if Tesla actually builds one I'll be surprised) may narrow this gap, but it's simply a limitation of EVs. Doesn't mean they should be dismissed outright given all of their advantages over ICEs, including, zero gear shift, insane power for cost of motor (and with falling cost in batteries, overall), high torque at 0RPM (electronically limited to prevent gearbox damage!), and convenient recharge at home. Plus, of course, they're potentially greener and emit zero emission at the tail pipe, in the very least, better for city environments.
This is why we will still have ICEs even when 99% of the world is driving an EV (2050~2075?)