Very cool! I love the Volvo 940- it stands out as one of the best quality, and best designed cars ever made. It's an incredibly mature design evolved slowly from the Volvo 140 in the 1960s through the 240 in the 70s and the 740 in the 80s, and by the 940 they worked out almost any possible issue. I only wish one could have gotten them with AWD and a fuel efficient diesel (they had the latter but it was not sold here in the USA).<p>The author seems to have a lot of electrical hacking knowledge, but didn't know some car stuff that could have made getting these controls installed much easier:<p>1) They could have just swapped in a newer BOSCH ABS pump, which can activate the brakes electrically without involving the brake booster. European cars started getting these when they got traction control in the late 90s, but I believe some would be virtually (or maybe even exactly) a direct swap into this vehicle. I was able to do this in a VW with about 10 minutes of work, which uses the same basic ABS systems as Volvo. This is assuming the car already had factory ABS which I think most (but possibly not all) 940s did.<p>2) They could fix the steering problem by swapping in an entire electric steering rack- they're fairly standard dimension wise, installing a fully manual rack from a Volvo 240, or adding an A/C compressor clutch to the hydraulic power steering pump to disable it above parking speeds (the only time torque would be high anyways). Moreover, these racks are strong enough to simply work with the hydraulic assist removed, because people in the Volvo racing/performance community do it all the time.<p>3) This car does not have a carburetor- it is electrically fuel injected. You can see the fuel injectors and rail above the throttle body. This could be just a mistranslation if the author is not a native english speaker. However, more importantly there was a factory system on this car to electrically control the throttle for the cruise control. They are missing those parts, but they are cheap and common, and would have just dropped in to a bracket and cam already on his engine. They consist of a vacuum servo on the throttle itself connected to a box that can actuate this with an electrical signal.