Relatively, it is best to not drink at all and drive. The reason is because the person who is drinking sometimes does not consider the number of drinks they will have. They may also lose count of the drink that they have consumed and are not aware how drunk they are. Many people who drink and drive claim and probably do believe that they are not drunk when they really are.
Also bartenders sometimes overpour the alcohol in the cocktails. Therefore, no cocktails should be consumed if you are going to drive. However, the maximum would be one no matter what the cocktail is. That way, you can stay safe on the road and keep others safe as well by not driving under the influence.