Interesting CAFE Implication

Part of the new proposed CAFE rules is that they will be applied on a scale that varies with a vehicle's "footprint", which is defined as its wheelbase x track. Vehicles with larger footprints will be allowed to have lower fuel economy than vehicles with smaller footprints; this is a way to (sort of) account for vehicle size. The NHTSA decided to use a sort of s-shaped curve called a constrained logistic curve, to map the footprint to the fuel economy target.

For cars, here is the proposed set of curves for 2011-2015 (copied from here, the NHTSA Notice For Proposed Rulemaking, p. 278). To get some idea of what this curve does to actual vehicles, I calculated the footprint of four vehicles and put them on the chart.























I think a possible side effect of this regulatory pressure could be that carmakers will increase the wheelbase and track of their vehicles, particularly vehicles with poor inherent fuel economy such as sports cars.

For example, if the BMW added added about 1.5" to its track and 2" to the wheelbase of the 328, it would go from a footprint of 44.8 ft^2 to 47 ft^2, and therefore from a 2015 CAFE requirement of about 37MPG to about 33MPG, or about a 10% reduction.

Matzah!

A little somethin' for my peeps.

Matzah! | Funny Jokes at JibJab

2010 Taurus Spy Photo

This photo is making the rounds on the net as a purported spy shot of the 2010 Taurus redesign.
Assuming it is, this a sharp looking car, and portends for a much livelier Ford in the future. From this view it looks like very little sheet metal is carry-over from the current Five Hundred/Taurus, although the pronounced arch of the roof line is still there.

It also signals that the tightly packed vertical grilles with large amounts of chrome are going away, and that Ford will go more towards its European design style, which is not a bad thing.
I do see a bit of Honda in the front end, and also, and maybe some Lexus. The shape is sharp, but somewhat generic. One good thing about the current 3-bar chrome grille that Ford is using is that it is a unique design.

It is amazing, to compare the 2010 with the 2008, how bland the 2008 looks.

Update: Someone pointed out to me, that this is probably not a concept car, but is probably a clay styling model. That is, a life size model of a proposed design made from clay and painted to look like a car. One hint is the "glass", which is painted glossy black. Also notice what appears to be another clay model, still clay colored, in the distance.

The point is, this car may be nothing more than a proposal by one group of designers, competing with other proposals. The final car may look very much like this, or it may look not much like it at all!

The next Taurus? (Courtesy of Edmunds.com)
















The Current Taurus


















The Ford (Europe) Mondeo



















Honda Accord


















Lexus IS

















Styling dead end? The Interceptor concept