First, the travel trailer is perhaps the most traditional recreational vehicle, having been around far longer than motorhomes, fifth wheelers or other RVs. Generally, travel trailers are also the least expensive RVs (except folding camping trailers), and can be pulled by most vehicles. The more powerful the tow vehicle, the longer (and heavier) travel trailer that can be towed. Fifth wheel trailers can only be pulled by a truck, whereas travel trailers can be pulled by cars (and even a motorcycle, in their smallest versions).