I hate vacuum leaks, with a passion. I've started wondering just what it would take to convert most of the vacuum actuators over to electic.

vacuum pump
brake booster
transmission modulator
door locks
shut off valve
HVAC
seat back locks
reservoir

Can't reasonably get rid of the brake booster, so we need to keep the vacuum pump too.
The tranmission modulator turns throttle position into a pull. Sounds like you'd need a rheostat, controller and position sensitive motor. Little involved, so probably keep it vacuum.
Door locks - can you say solenoid? Add one switch in place of the master vacuum switch and your set.
Shut off valve - solenoid.
HVAC - lotsa solenoids. 5 micro switches.
seat back locks - 2 solenoids.
reservoir - who needs it?

Anyone made an attempt at this yet?

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I suggest we solve high gas prices with environmentalists... unfortunately they don't burn well.
1982 300CD, 220K miles: This vacuum system will be the death of me yet! (OBK #26)
1977 F150 400 C6 2wd, 10.2 sec 1/8 mile with 2.75 gears.
1965 Mustang. Mostly stock... LOL!
2001 Ram 2500, cummins, 5spd, 202k miles.(girlfriends)