A combination of Envision's status as a non-manufacturer team and teething problems at Valencia has contributed to a lack of mileage, and Cassidy also had to share his car with new team-mate Sebastien Buemi after the Swiss also contended with technical struggles in December's test.
Although Cassidy managed more than double the laps of Buemi across the Valencia test, the 2015-16 champion had previously been able to achieve some running in Jaguar's private testing sessions.
