I was giving a friend a ride in the car when I step on it part throttle the car downsifts and starts stumbling. all the rpms then hit the red line, so I ease of the gas and try it again and it happens again. I give him a lift to his house then he follows me in his ricer to mine. I decided to give it wot to see if it would happen it did. My friend says he saw black puffs of smoke out of the exhaust while the car stumbled and all the rpms are maxed out. It's like it didnt want to shift. I got home and let it cool off. Wife tell's me i need to get something at the grocery store so i take the car. It feels like it's slipping the engine or tranny i mean doesnt feel tight and it's losing power big time. I dont think i can hang in there much longer. I have no Idea what the problem could be. My wife says that we cant afford to have our only car in the shop for weeks. Can someone give me some options?