Given how terrible business credit cards are for rewards, can you put all your expenses on personal cards instead? Yes, but the bank might not like it...
The AMEX HighFlyer Card suffers from poor earn rates and lacklustre benefits, and there's little reason to use it — unless your only alternative are corporate cards.
From 2004 to 2008, SIA offered an Executive Economy cabin on five of its aircraft, the forerunner of today's Premium Economy. Here's the story of this short-lived product.