Yes. It looks like overspeed.
2. 这种“小罪” 是否有记录,对自己以后申请绿卡等是否有影响?
Not really. If it is one year sentence, you can not get GC
3. 听一个律师行的人说,有影响,但他们可以帮我打官司,肯定可以把这个事情免掉。还说,如果怕律师费贵,他们可以在事后做些文件把这个事情给隐蔽掉。我不太懂这些,律师朋友们他说的对吗?我要选择出庭还是直接交罚款了事?
It in not true. You can not get waiver. Some states may keep record for five years. If there will be not any new violated law, it will be cleared five years later.