What are the consequences of refusing a chemical test?

[60 Cal.App.3d 142] 'The classes are different. All who refuse the chemical test are subject to the sanction of section 13353, and all who drive under the influence are subject to the penalties provided for that offense. A driver may fall into either class, or neither or both, and will receive the treatment which the law provides for the class or classes in which he places himself. (See August v. Department of Motor Vehicles (1968) 264 Cal.App.2d 52, 67 (70 Cal.Rptr. 172).)'