There are just about 2 days to submit your entry for the Tikitreiler torsion axle design. A nice number of nice models competing already - see if you can beat them, upload yours, win 1,500 USD.
Here are some of the entries uploaded so far, starting off with Yves-Antoine Crête's simple and minimalistic model.
Another colourful version using standard parts, by Filipe Rosado.
And last but not least, a very thought out example showing off all the details by CAD-MECA.
You have almost 2 days to come up with your design and solution. Read the requirements, submit your entry and help Tikitreiler here. It really is a fast way to earn a nice amount of 1,500 USD.