I'd build it with the best security systems money could buy!

Of course, NOTHING will stop the most dertermined criminals from stealing a car if they really wanted to.

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My much loved machines...
1990 E32 BMW 735i - Daley Driver
1983 Okuma LB15 Twin Turret NC turning center - Money Maker!
1985 Suzuki Sierra - Off-road thrasher and mobile shooting platform
1981 HMT NH26 20HP 30" Gap Bed Engine Lathe - Money Maker!
1966 Lancia Flavia 1800 Coupe - Weekend toy
1941 South Bend 9" Model C Workshop Lathe - Antique restoration project.