Ok, huge update - the 2010 car;
to summarise the changes first, i have mainly changed the rear of the car - it has lower rear bodywork, completely new rear suspension and a new diffuser. I have also made some other changes all over the car including a revised front wing and a new splitter.
Also, consider it a winter testing version as it has minimal cooling at the moment

i have modified the front wing endplate to have a slightly sharper bend

I have completely redesigned the front splitter so that it no longer directs are underneath the floor. This new design is more in keeping with normal f1 cars.

I have added another fin infront of the sidepods to better direct the air. I have also changed the geometry at the start of the floor.

I have added a opening in the floor like many f1 cars have

I have repositioned the wings on the airbox, moving them upwards

I have redone the exhaust exit to make it more simple, so hopefully the airflow is smoother. This picture also shows the lower sidepods and the pullrod rear suspension

This picture shows the rear suspension, which is completely new. It has a very agressive forward sweep to make more room for the diffuser...

This picture shows the diffuser and the lower rear wing element. The second deck is larger and no longer obstructed by suspension elements, also the lower rear wing element has a shorter chord at the centre and outside edges.

another pic of the diffuser

this picture shows the cutout in the centre of the diffuser, inspired by brawn's, and the larger hole in the floor.

this picture shows the new rear wing endplate gills