i think it shows how dire the money situation is at Williams, they are losing their main 3 (?) sponsors and can't afford to keep the promising Hulkenburg. They are selling transmissions to HRT and KERS to Porsche in sportscars, they had to take the Cosworth deal cos they couldn't afford a proper engine (although that worked out quite well for them with the development that has been allowed to make the Cossie competitive) and i fully expect them to take a backward step next year as they clearly can't afford to run at the level they want to. sad times for Williams