Sinclair C5 with Sinclair claiming that he had found "very big" levels of interest. Hoover were sufficiently persuaded to allow Sinclair to divert 10 of their employees to modify C5s for overseas export. The bid to sell the C5 abroad failed; the Dutch National Transport Service told Sinclair that the C5 was not suitable for Dutch roads without improvements to its braking system, the addition of more reflectors, and the inclusion of the High-Vis Mast as part of the basic package. Most of the other ten countries that Sinclair inquired of demanded similar changes. The C5's reputation received a further battering when
Sinclair C5 a snow- and ice-covered hill – later prompted criticism even from Sinclair executives, who admitted off the record that spring conditions might have been better for a vehicle with so little protection from the British climate. The "Financial Times" called it "the worst possible timing to launch what was proclaimed to be a serious, road-going vehicle". Sinclair's biographer Rodney Dale describes it as "a calculated (or miscalculated) risk", pointing out that production was already underway, details were beginning to leak out to the press and "the launch could hardly have been held up until the possibility of a bright spring