Having good system security is already possible. It just requires good software and good security practices.
First get some really good encryption software that can be trusted (no, Microsoft's (aka 'Apple should have weak encryption and build in back doors') BitLocker is *not* trustworthy). BestCrypt or DriveCrypt Plus Pack both seem reliable and better still neither are based in United States.
Good security practices includes having a kill key that will wipe the internal memory where the key is kept, which also wipes the operating system in memory also which crashes the computer. Hit the kill key and everything locks. Good security is the drive automatically dismounts after a set timeout period of no activity. Good security is a strong password. To over-simplify a Bruce Schneider article a key-character only gives 2 bits of entropy. A good starting place for strong drive passwords is 50 characters.
Be careful about physical security. I forget who, but the FBI wanted to get into the computer of a mobster, and the computer had a strong password. They got a secret warrant and installed a dongle on the computer which recorded keystrokes. Now days they can replace keyboards and computer mouse with look-a likes that have built in key recorders. Watch your ports and beware odd hardware. Watch out for mini-cameras that can be installed and watching your keyboard.
Be careful about online security. As Snowden pointed out the NSA does have a wide array of software to hack into peoples computers. Don't install untrusted software. Don't accept dodgy links sent to you to visit. Do use some really good VPN software (it doesn't hide you perfectly but it does make it much harder for the NSA). Install virtual systems (ex VMWare Workstation) on your computer and work on really sensitive projects in there. Use an air-gapped computer that no access to the internet, Wifi, or internal network.
Having a system with a hair-trigger vibration guard and a wire cage drive enclosure is good but misses the point. The weakest link to security is usually the person behind the keyboard.