What's the Kennection? #350

What car company took its iconic horse logo from the coat of arms of Stuttgart, where it has its headquarters?

What was the family name of Adam, Hoss, and Little Joe on TV’s 'Bonanza'?

What kind of IRA plan, named for a Delaware senator, allows for tax-free withdrawals?

The Dead Sea isn’t a sea at all, but rather a “hypersaline” example of what body of water?

'Total Recall' and 'John Carter' are movies that both begin on Earth but quickly move to what other planet?

What's the "Kennection"?