Lotus still has some “fairly substantial upgrades” to come this season, technical director Nick Chester has said ahead of next weekend's Belgian Grand Prix. Lotus need to make big strides in the second half of the year after a nightmare start to the 2014 Formula 1 campaign. Indeed the Enstone squad has scored just eight points – following Romain Grosjean's two eighth place finishes in Monaco and Spain – and will need to more than double that tally in the final eight races, if the team is to beat Toro Rosso and get seventh place in the Constructors' Championship. Last year Lotus finished third, behind only Red Bull and Mercedes, taking 14 podiums, including one win, and scoring over...
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