These cars don't have much clearance between the tire inner sidewall and the strut body, don't think there's room there for chains.
Proper snow tires? I run General Altimax Arctics in the winter here (Colorado) on my SVT Contour and my wife's Mercury Tracer, great tires in the snow. Eh, probably not practical or fiscally appropriate, I see you live in San Diego.
Rent something appropriate to drive to Tahoe?