Not exactly a hidden feature, but I'm one of those people that has problems with the phone connecting to the car for unlock and I found that if I press the power button on my phone such that the screen is on as I'm walking up, it's almost a hundred percent reliable. I don't even have to unlock it, just turn it on to the lock screen.
Also, regarding the pressure needed on the steering wheel... this issue I have is that it's not hard if you tend to rest your hands on the top of the steering wheel, but I tend to rest mine on the bottom. That makes the torque needed to left in vehicle no I'm there, awkward. The (very first world! ) problem I have is that the torque that is required makes it hard to relax when my hands is free floating (requires regular effort /response) , but I found that if I put the steering wheel as far toward me as it goes (I'm short) , and bend and rest my left leg up against the driver's door, then I can rest my left hand on my leg, and just holding the steering wheel from that more stationary point will be enough resistance to let it know I'm there. I still rest my right hand on the wheel, but it floats with the wheel and takes over when needed, it just doesn't need to periodically pull on the wheel.