2022_01_24_102331_create_licenses_table.php

<?php

use Illuminate\Database\Migrations\Migration;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Support\Facades\Schema;

class CreateLicensesTable extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::create('licenses', function (Blueprint $table) {
            $table->id();
            $table->unsignedBigInteger('vehicle_id');
            $table->string('license_number');
            // Anything you want to describe the license (country, fees, ... )
            $table->timestamps();
        });
    }

    /**
     * Reverse the migrations.
     *
     * @return void
     */
    public function down()
    {
        Schema::dropIfExists('licenses');
    }
}

2022_01_29_160852_create_vehicles_table.php

<?php

use Illuminate\Database\Migrations\Migration;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Support\Facades\Schema;

class CreateVehiclesTable extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::create('vehicles', function (Blueprint $table) {
            $table->id();
            $table->string('vehicle_type');
            $table->string('brand');
            // Anything you want to describe the vehicle
            $table->timestamps();
        });
    }

    /**
     * Reverse the migrations.
     *
     * @return void
     */
    public function down()
    {
        Schema::dropIfExists('vehicles');
    }
}

License.php

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;

class License extends Model
{
    use HasFactory;

    protected $fillable = [
        'license_number',
        /** Anything related to a license number */
    ];

    /**
     * @return \Illuminate\Database\Eloquent\Relations\BelongsTo
     */
    public function vehicle()
    {
        return $this->belongsTo(Vehicle::class);
    }
}

Vehicle.php

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;

class Vehicle extends Model
{
    use HasFactory;

    protected $fillable = [
        'vehicle_type',
        'brand',
        /** Everything you would need about a vehicle */
    ];

    /**
     * @return \Illuminate\Database\Eloquent\Relations\HasOne
     */
    public function license()
    {
        return $this->hasOne(License::class);
    }
}