Yeah I gotta agree...I tow one of my trailers about every other day and while your car may move/pull the trailer your jeapordizing your safety pulling that trailer (Like having a 4x4 in the snow...u can take off fast but can't stop fast!) w/ your car and by the way...I've had those electric brakes fail on more than one occasion due to an electrical issue...of course w/ a 3/4 to 1-ton truck I can still get it stopped but in your case it would just lock-up your brakes as the trailer just pushed you forward skidding. A 700 lb tongue weight will push down the rear some on my 1 ton dually, I couldn't imagine what it would look like or do to your suspension on the Buick let alone completely throw off the weight balance of your car making your steering light and front brakes lock-up easier as well. You can pickup a used truck cheap, like a 1/2 ton 2wd...it will be alot safer than what your going to attempt, just sharing my .02 cents as I have alot of towing miles under my belt. Good Luck