'Octane' Magazine run a design classic page in their mag every month.
Aga cookers, anglepiose lamps, hunter wellies, linn record decks, T.E. Lawrence's Brough superior motorcycle (google it, it's beautiful) chairs like Jez's, they are all there!
Oh to win the lotto and fill the (30's flat roof deco 5 bedroom house) with only objects that are true design classics or pioneering designs. Imagine what (I think it's Lowery who pioneered all that aero design in the 30's and 40's)'s house would look like.
As for cars, in a house like that it would have to be a chrome bumper Porsche 911 (2.4T) and a 1980 UR Quattro.
Imagine it, ahhh

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Somerset, like 'Heartbeat' with newer cars!
Retro MTB: 1992 Cannondale M1000 Deore XT M730. 1992 Raleigh Dyna Tech Quantum Deore XT.
Retro Road: 1992 Eddy Merckx Corsa Extra Telekom Shimano 6400 Ultegra. 1993 Dyna Tech Ti Campagnolo Athena 8 Ergopower.
Modern: 2004 Wilier scandium Ultegra 6800. 2014 Wilier GTR Dura Ace 9000.