![biofuels-thumb.jpg](/assets/Directions/Autumn-2012/_resampled/FillWyIxMDAiLCI3NSJd/biofuels-thumb.jpg?m=1518030298?m=1518030298)
Green machines
For most of us, travelling further than we can walk requires oil. Michael Henry delves into the topic of liquid biofuels.
![congestion-thumb.jpg](/assets/Directions/Summer-2011/_resampled/FillWyIxMDAiLCI3NSJd/congestion-thumb.jpg?m=1518112596?m=1518112596)
Global congestion
Peter King explains how the International Transport forum held every year looks at mobility related topics, specifically congestion problems.
![fatigue-thumb.jpg](/assets/Directions/Summer-2011/_resampled/FillWyIxMDAiLCI3NSJd/fatigue-thumb.jpg?m=1518112596?m=1518112596)
Driver fatigue
The AA Research Foundation calls attention to the surprisingly common phenomenon of microsleeps and why drivers should be aware of it.
![corvette-thumb.jpg](/assets/Directions/Summer-2011/_resampled/FillWyIxMDAiLCI3NSJd/corvette-thumb.jpg?m=1518112596?m=1518112596)
Little red corvette
Karen Goa visits the Bowling Green assembly plant in Kentucky, USA, where around 80 Chevrolet Corvettes are rolled out each day.