Sinclair Research worried that Clive Sinclair himself was using his own personal wealth to fund his inventions. By 1990 the company's entire staff had been reduced to just Sinclair himself, a salesman/administrator, and an R&D employee. By 1997 only Sinclair himself was working at his company. In 1992, the "Zike" electric bicycle was released, Sinclair's second attempt at changing people's means of transport. It had a maximum speed of , and was only available by mail order. Much like the C5, the "Zike" was a commercial failure, and sold only 2,000 units. In 1999 Sinclair released the world's smallest radio, in the
Clive Sinclair A-levels in physics, pure maths, and applied maths at St. George's College, Weybridge. During his early years, Sinclair earned money mowing lawns and washing up, and earned 6d (old pence) more than permanent staff in a café. Later he went for holiday jobs at electronic companies. At Solatron he inquired about the possibility of electrically propelled personal vehicles. Sinclair applied for a holiday job at Mullard and took one of his circuit designs; he was rejected for precociousness. While still at school he wrote his first article for "Practical Wireless". Sinclair did not want to go to university when he