As long as there are people who want to have fun and have money, the sky is the limit.

Look at those cigarette race boats that use fuel at 100 gal/hr - they may be complaining about the cost of fuel - especially from a marina, but there still running em like they stole em.

the 6.4 is far from out of the question. It may be out of touch by the pricing they decide for most average Joes, but they would sell.