What is it?
The Tesla Model S P100D gets its moniker thanks to the addition of a 100kWh battery. It's a hardware upgrade for Elon Musk's company, which can usually be relied upon for an almost constant supply of revisions and software upgrades over the air.
If the official figures for the Model S P100D are to be believed, a range of 381 miles is available from a fully charged battery. Even taking into account the kind nature of official NEDC tests, the real-world range of this electric vehicle should comfortably exceed 250 miles if you drive carefully.
The trouble is that being careful is trickier than you might think. As well as increasing the range, Tesla has increased the Model S's performance to hypercar-hassling levels. A software update for cars with the Ludicrous Speed upgrade (standard on the P100D) now means you can access Ludicrous Plus mode.
This additional technology comes at a hefty price. Allied to a recent 5% price hike blamed on Brexit, the P100D costs £132,700 not including the Government green car subsidy. In other words, it costs nearly twice as much as the basic rear-wheel-drive Model S 60 model.