If you continue down to Idaho Springs its an awesome drive with great views. Once in to Idaho Springs there will be an I-70 on ramp take it to the 6th to golden exit and take the twisty canyon road down to 6th east where you can get back onto 470 and make one big loop.
I also love to drive squaw and do so frequently since I live right near it. There is a back way from my house the includes a bunch of dirt switchbacks and puts you out about 10 minutes up the pass.
While there aren't many cars there are many bicycles on weekends so watch out for them. The reason you dont see many cops is because the road is broken into 3 different departments jurisdiction. the first 7 or 8 miles is Jefferson County Road then the middle section is Colorado State Highway then the last 6 or 7 miles are Clear Creek County Road. During the winter You can actually see the lines where county roads meet state highway where the plows stop plowing.