On that new version I keep getting cars with no wheels at all! 

I like the new version. I'm running it non-stop with the 8-wheels-max setting - it is hilarious.

I am annoyed through that only some of the wheels seem to be 'powered'. Some touch the ground at times but don't propel it at all, making me slide back down on ramps after a few amusing flips.

I like the new version. I'm running it non-stop with the 8-wheels-max setting - it is hilarious.

I am annoyed through that only some of the wheels seem to be 'powered'. Some touch the ground at times but don't propel it at all, making me slide back down on ramps after a few amusing flips.

Every time that happens, in my mind I hear the muted trumpet of disappointment: wah-wah-waaaahhh

True, but could you design a better motorcycle than one resulting from 1 million+ years of evolving

I am annoyed through that only some of the wheels seem to be 'powered'. Some touch the ground at times but don't propel it at all, making me slide back down on ramps after a few amusing flips.

To me it does seem all the wheels are powered, but inertia, friction, gravity, etc mean some times a wheel doesn't seem to cut for a slope. Personally I'd like to see them being given more time to recover after sliding back down a hill. I've seen a few look like they were about to start motoring up the hill but a killed off because the inertia from the previous slide down it still lingered just a bit.

I imagine though the author was careful to avoid any loops where a car never actually progressed, but also never got killed off.

NECRO THREAD, ARISE FROM YOUR GRAVE!

I recently came across this, from the same guy who did the first one.

How is the score calculated?
In order to promote upright walking, each creature receives points based on how high the head is in relation to its feet, and how much it advances while upright. Bonus points are given for each proper step forward.

I don't find it nearly as fun to watch as the genetic cars, but it's still pretty spiffy.

As an aside, after playing around with the Genetic Cars again, I was unsatisfied with how some things worked. I saw that the source was available, so I've been referring to it to make something similar in Unity. Here are some screenshots of my progress (click to embiggen):

Here's one of my earliest screenshots after getting the basic (though still somewhat incomplete) car generation working:



Here's one that wins the award for BEST PROCEDURALLY CREATED CAR EVAR!!!!111:



And here's a rather sporty little car that was doing great compared to its peers, but my timing on the screenshot was poor. It's doing a little nosedive after coming down off a hill:

There are few things as enjoyable as writing code that surprises you

When Last did you do so?