This is looking pretty good, but for the constant importing idea (I haven't used sketchup for a long while, but...), couldn't you have one project with all pieces lined up and use the CTRL+ move to speed things up? Ctrl changes move tool into duplicate if i remember correctly.

Maybe I should change mine to sketchup format as well as that seems much easier than the previous idea of coming up with a logic system in rad to place blocks and create a track in game (I have a faint idea of getting blocks to be placed, but deleting, saving, and loading are way out of my scripting abilities)

by the way, are those made with a single texture, or is it usual sketchup painting (more polies by separating by material)?
and for the bridge, just a bit questionable how thin it is, does it work well in 3d rad? (sometimes heavy or fast objects hitting a thinner wall have more of a chance to have a collision error like falling through)

Edit:just took a look at it and realized it's just a backface on the bottom of the bridge piece (may cause visual problems?) and also noticed it was drawn for textures, which does result in a high poly count if later on your game has some fps problems (that one file with all pieces exported with almost 20,000 polygons which were placed in unnecessary places, just the pieces amounted to 3757 faces.)

Just had a very quick look, and making each piece textured properly is going to improve this no end. (Cypermethrin had suggested this but I dismissed it.....now I'm gonna owe him a beer)

The quick test making my own photoshop textures for the road and grass looked a million times better and gives me much more scope, as well as making everything lower poly.

It'll take a bit of time - but it's going to be well worth it.

Have fun playing with V0.2 for now - let me know any other things you come across or pieces you would like to see - and I'm underway with V0.3 from tonight.

The texturing of this is developing well, I'll post some screenshots soon (GIMP is amazing for those that don't have Photoshop - with superb community support)

How are people finding the use of it so far? Any critique and improvements?

I'm tentatively looking into how to develop a ruby script that could be used to make either;

a) A random track determined by a grid width and depth (7 squares wide and 5 deep for example)

Or,

b) Some way of creating a track along a user defined spline (or path)

I personally favour the first method (which will still be very hard to do) but I was wondering what you - the users - would prefer?

Thanks dogtorque,

Loops, spirals, and corkscrew's are not on the agenda at the moment for the starter pack - If demand is high for it I will develop an addon with these bits.

The big corner looked interesting - but I couldn't see how it would 'snap' into line with the other pieces. Must admit I haven't tried yet though.

Cheers for the feedback - and of course carry on adapting this to your needs - it's for everyone to use how they see fit. 

grim heres a new corner i modified the original corner model you made but this one is a ramp corner to help explain what im trying to say is that this model is a curve that gos up 1 level or in other words its like the straight ramp 1 and the corner 1 put together.
for the ramp corner 1 i used a grid pn the road part instead of just triangles i did thhis so that when some one uses it in 3drad the car won't bounce to much when hitting the curve at high speeds.and here's a modified version of you crossover this one has 3 ways instead of 4

heres 2 road textures for you

cool, just what I need!