Hi okie
Yes, I get partial cramps in my calves quite often actually. Often when I am lying in bed reading after exercising and walking a fair bit that day.
You might want to consider investigating a very good magnesium supplement, makes sure it is a complete Magnesium as there are from memory 11 different types of Magnesium.
Magnesium is the fourth most abundant mineral in the body and is essential to good health, over 50% of the body's Magnesium can be found in the bones. It is required for over 300 biochemical reactions in the body, including maintaining normal muscle and nerve function amongst other functions. So you can see if there is a slight imbalance in Magnesium it can result in a mild deficiency and you may need to supplement, especially when you are spending lots of hours sitting in a cramped car seat. Also, in the heat you are losing essential electrolytes, including Magnesium which result in cramping.
Any news on the other job application?