A very busy day at work started with a visit to a battery pack manufacturer in Billerica followed by my first all-hands Engineering meeting which went very well. By late afternoon I was helping out with photography for a set of instructions on how to replace the rim on our Copenhagen Wheel and then a meeting to prepare for a job fair we will be participating in at Harvard next week. Before I knew it the day was over and I was on my way home. One of the things I enjoy most about working at a startup is the number of different hats you get to wear.