 The smaller 5 cwt, 8 cwt and 10 cwt vans were usually car based, while the larger payload vehicles of 30 cwt, 2 ton and upwards were designed as trucks with little or no relationship to their passenger car cousins.In between is the 'grey' area, where the vehicles require a larger frame, springs, etc., to carry more weight than the larger saloons of the period, yet can suffer from a high unladen weight (and tax) if the beefier frames and axles of the real trucks are used.In the past there had been several contenders in this field, Ford, for instance, offering a choice of no less than three different engines for their 1939 15 cwt van, , and .