Sorry to be such a nit-picker folks, but in a previous life I was a military police officer in Canada, so I have a more than average understanding of the law in my country. An American citizen cannot be granted a "Pardon" by the government of Canada, UNLESS the said American has been convicted of a crininal act, IN CANADA. A pardon is only given if you were convicted in Canada.
The form that you are writting out is to allow you to enter Canada inspite of your American criminal record, and is called an entry waiver. The Government of Canada, thru the Revenue and Customs Agency, does have computer connection with both the FBI and the NCIC ( National Crime Information Center) and when you approach the first inspection station, your vehicle plate will be recorded, and you may be asked to produce personal identification. If you have a criminal record in the USA, other than traffic tickets, or such, you may be denied entry to Canada, as a undesireable person. Don't feel bad over this though, the US Customs Service is every bit as bad when it comes to Canadians being treated as if we are some kind of sub-human species. The difference of course, is that the Canadian officials are not armed and don't feel the need to push people around so much. JIM BUNTING