Thunderhill Raceway Elevation Model

A topological model of Thunderhill Raceway Park based on data from [Kairos Aerospace](http://kairosaerospace.com/) as part of the [Self Racing Car](http://selfracingcars.com/) project.

Thunderhill has many interesting terrain changes that affect how you drive it. Looking at it in 3D really allows you to understand those terrain changes.

I manually drew the track using a marker -- I couldn't find an easy way to build that into the print.