bhand is right, CDN 182 for importing it into canada if it was listed in your goods to follow. Highly recommend keeping the car if you have a family. I would keep it no matter what, you know the advantages. I can tell you in Vancouver, insurance is pretty high. And add the crime factor too. On the other hand, buying a car here, you will have to pay 14.5% in taxes. The Govt. sales tax in Canada is 7%, BC's provincial tax is 7.5%.
You must have the title with you when crossing the border. I read somewhere that you have to clear the US customs too when exporting the car, but I was never asked and did not do it. Canada customs will ask you for the title.