回复：急：有那位加拿大永久居民无枫叶卡从美国开车进加拿大？

You might take risk. Normally the Canada officers will not ask about maple leaf card. But if they asked about the maple leaf card, you should prepare some reasonable explaination for this.
If you go to toronto, it is better to go pass Lewiston port among the three ports of Buffalo, NY and better go pass the border at midnight,