How can I use DisplayName data annotations for column headers in WebGrid?

I have a Car class that I'm trying to display in an MVC 3 view using the WebGrid helper. Below are the Car and it's metadata class.

Car class:

[MetadataType(typeof(CarMetadata))]
public partial class Car
{
    // car implementation
}

Car metadata class:

public class CarMetadata
{        
    [DisplayName("Car Name")]
    [StringLength(100, ErrorMessageResourceType = typeof(ValidationText), ErrorMessageResourceName="CarNameDescriptionLength")]
    [Required]
    public string CarName { get; set; }    
}

View contents:

@model List<Car>
...
var grid = new WebGrid(Model, canPage: true, rowsPerPage: 10);
grid.Pager(WebGridPagerModes.NextPrevious);

@grid.GetHtml(
    htmlAttributes: new { id = "grid" },
    columns: grid.Columns(
        grid.Column("CarName", ?????)
    ));

GOAL: I'd like to figure out how to use the DisplayName data annotation as the column header text in the WebGrid (?????). Does anyone know how this is accomplished?

Thanks in advance!