BMW Alpina B7 vs Chrysler 300

What's the difference?

You know when you're walking along the footpath and you come to a soft spongey bit that the council have put in around a tree and your mind goes: "Whoah, the ground is bouncy but it looks just like bitumen?!"

Well that's the kind of response you'll get from people when they think they're looking at a regular BMW 7 Series, only to have their world go a bit bouncy when they see the Alpina B7 badge on the back of this car as you're overtaking them at Warp Factor 9000.

And you will be overtaking them like a blur because, thanks to the elves at German tuning house Alpina, the B7 is hugely fast for a five-seat, 5.3m-long, 2.2 tonne limo. But then the B7 is fast for any type of car of any dimensions, because with its 330km/h top speed this beast will outrun a McLaren 570GT. Yes, seriously.

Based on the BMW 750Li long wheelbase, the B7 begins life rolling down the same production line as a regular 7 Series. Alpina then goes on to make so many changes to the engine and chassis that the German government requires the BMW VIN to be replaced with a new one.

Ready to find out more? Well there's so much to see here that things may go a bit weird and bouncy again. Be prepared.

You may be sensing an increasing level of hype around hybrid and full battery-electric vehicles. In fact, it feels like the automotive world has gone full-fat bananas over ‘electro-mobility’.

At least car manufacturers have, with Tesla’s entertaining antics disrupting the status quo, and causing virtually every mainstream brand to get on board the zero-emissions express.

But of course, the other side of that equation is demand. The rush to meet ever tightening emissions regulations (and save the planet in the process) fails to recognise the fact that not everybody wants a ZEV… yet.

The days of big-bore, more is good, internal combustion propulsion aren’t over yet, and Chrysler, like the rest of the ‘Murican Big Three’ is keeping traditional muscle car enthusiasts happy.

In fact, we’re in the midst of a US horsepower arms race not seen since the late 1960s and early ‘70s, and Chrysler’s SRT (Street & Racing Technology) performance subsidiary is leading from the front with a variety of over-the-top Hellcats, Demons and Red Eyes.

Australia has recently picked up a whiff of that action with the utterly mad 522kW Jeep Grand Cherokee Trackhawk, but the only slightly unhinged SRT version, and this car, the Chrysler 300 SRT, have been around for some time.

Launched here in 2012, the second-generation version of the 6.4-litre naturally aspirated sedan was discontinued in the USA in 2014. But sensing a large sedan-sized opportunity as local manufacturing from Ford, Holden and Toyota went the way of the Dodo, the local FCA team negotiated a continuation deal.

Think of the 300 SRT as America’s M5 or E63. A full-size performance sedan with a thick layer of luxury laid over the top, but at around one third the price.