I had to write some Android code to perform some simple functionality, using a laptop hooked up to a big screen so they could see what I was typing. It felt like a collaborative process, so when I wasn't sure of something we discussed alternatives and looked things up, just like a real-life engineering pair-programming scenario, where I was driving. This was good as it also gave me insight into what it would be like to work in the team. Overall I was very impressed with this interview process. It felt like a better way to assess my relevant problem solving skills and ability to work in a team than artificial code puzzles.