Loch Ness Toyota Tundra

In a long running TV commercial, Toyota tortures a Tundra (ed. Tacoma?) at Loch Ness, grabbing it from the shore with a single large tentacle and ejecting it from the water in a head-on crash into a dirt bank, after which it starts up and drives away.

Can anyone put together the story or plot that lies behind this video? You'd have to see it, and not rely on my description above.

Video here.

or here

Another Toyota video here