All the time cars like the Z4 are offered with engine choices such as a 2 litre 4 cylinder 150bhp, it's not too difficult to embarress the fools that buy them

I'm sure all Z4s handle excellently but if you're not going to specify a decent engine then what's the point?
BMW make a lot of money out of people who want the badge but can't afford the proper cars. Hence the creation of the 1 series.
Maybe it just takes a real car like your storm to show them the error of their ways!