convertTo

main.cs

using System;
using System.Linq;
using ServiceStack;
using ServiceStack.Text;
using System.Collections.Generic;

public class Car
{
	public string Model {get; set;}
	public int Year {get; set;}
	public int MaxSpeed {get; set;}
}

public class TechRevision 
{
	public bool Ok {get; set;}
	public string RevisionDate {get; set;}
}

public class CarRevisionDbo
{
	public Car Car {get; set;}
	public List<TechRevision> TechRevisions {get; set;}
}

public class CarRevisionDto
{
	public string Model {get; set;}
	public int Year {get; set;}
	public int MaxSpeed {get; set;}
	public List<TechRevision> TechRevisions {get; set;}
}

var carRevisions = new [] 
{
	new CarRevisionDbo 
	{
		Car =  new Car { Model = "BMW", Year = 2000, MaxSpeed = 190},
		TechRevisions = new List<TechRevision> 
		{
			new TechRevision {Ok = true, RevisionDate = "2004"},
			new TechRevision {Ok = true, RevisionDate = "2008"}
		}
	},
	new CarRevisionDbo 
	{
		Car =  new Car { Model = "VW", Year = 2002, MaxSpeed = 190},
		TechRevisions =  new List<TechRevision>
		{
			new TechRevision {Ok = true, RevisionDate = "2006"},
			new TechRevision {Ok = true, RevisionDate = "2010"}
		}
	}
};

var converted = carRevisions.ConvertTo<List<CarRevisionDto>>();


System.Console.WriteLine(converted.ToJson());

packages.config

<?xml version="1.0" encoding="utf-8"?>
<packages>
  <package id="System.Memory" version="4.5.2" targetFramework="net45" />
  <package id="ServiceStack.Text" version="5.5.0" targetFramework="net45" />
  <package id="ServiceStack.Client" version="5.5.0" targetFramework="net45" />
  <package id="ServiceStack.Interfaces" version="5.5.0" targetFramework="net45" />
</packages>