Lotus technical director Nick Chester buoyed by positive pre-season testing following engine switch. The switch from Renault power units to Mercedes is already paying off, according to Chester. Though the Enstone outfit was only the seventh 'busiest' team over the course of the twelve days, its 2,628 miles compares extremely favourably to the 800 miles completed in 2014 when struggling with the new Renault unit. 'This year is looking a lot better,' admits Chester, 'the power unit is a big step forward. The chassis is also a step forward, the drivers can get a lot more from it and it's easier to drive on the limit as well as being more predictable. 'We spent some of the test exploring the...
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