Raw, uncompromising and useable. These are three words that sprang to mind following a weekend spent with our long-term Caterham 310 S after wrestling the keys from my colleague Ben Miles’s hands. It is a car that really requires you to think, which is apparent in both the pre-journey checklist (have I got the right clothing? Will it rain?) and in terms of what you are doing behind the wheel. Without any of the modern driving aids, no traction control or even ABS, to which we have become so accustomed, the Caterham requires some cognitive recalibration.