Charles was forced to charter a plane for trip as ministerial jet was out of action and gave radical speech

The Prince of Wales was driven two hours to Davos in an electric Jaguar instead of by gas-guzzling helicopter 

He described his dedication to corporate, social and environmental responsibility as an 'uphill struggle' 

But he added: 'In order to secure our future and to prosper we need to evolve our economic model'

After meeting Greta for the first time he will fly from Switzerland to Middle East for tour of Israel and Palestine