Misc: Which car introduced in 1907, required 48 feet to stop from speed of 25mph?

Questions

What was Attila the Hun doing when he died?

This Pope was murdered by an irate hubby who found him on top of his wife?

How many umbrellas are lost on the London Underground each year?

Until the introduction of the Julian Calender in 1752, New Year's Day fell on which date?

Which country is the only one which doesnt print its name on its postage stamps?